.page-title {
    text-align: center;
}

.question-info {
    text-align: center;
}

.comment-group-title {
    margin-top: 20px;
}

.form-container {
    width: 500px;
    margin-top: 10px;
    text-align: right;
}

.comment-group {
    list-style: none;
    padding-left: 0;
}

.comment-group li {
    border-bottom: 1px solid #eee;
    padding: 10px 0;
}

.comment-group li .user-info {
    height: 40px;
    line-height: 40px;
    color: #9b9b9b;
    font-size: 16px;
}

.user-info .avatar {
    height: 40px;
    width: 40px;
    float: left;
    border-radius: 50%;
}

.user-info .username {
    margin-left: 10px;
}

.user-info .create-time {
    float: right;
}

.comment-content {
    margin-left: 50px;
}